Erucastrum C. Presi

91. Erucastrum C. Presi 1

Annual or perennial. Flowers in terminal racemes. Sepals erecto-patent, the inner somewhat saccate. Petals yellow, clawed. Lateral nectaries semilunar or bilobed. Fruit a linear, torulose siliqua; valves keeled, strongly 1 -veined, with a lateral network of smaller veins; beak more or less conical, with 0-3 seeds. Seeds in 1 row in each loculus, ovoid or oblong.

1 Leaves somewhat fleshy; the upper cauline small, linear, conspicuously different from the basal

2 Basalleavesdenselyhispid;hairs0-1- 04mm; ovules17-24; siliqua not contracted at base of beak 1. laevigatum 2 Basal leaves sparsely hispid; hairs 0-5-0-75 mm; ovules 11-18; siliqua distinctly contracted at base of beak 2. virgatum 1 Leaves membranous; the uppercauline similar to basal

3 Raceme bracteate below; sepals erect; siliqua not stipitate

5. gallicum 3 Raceme ebracteate;sepalspatent;siliquastipitate

4 Somewhat hairy; lower cauline leaves lyrate-pinnatisect, with

6-8 lobes on each side; petal-limb broadly obovate

3. nasturtiifolium 4 Entirely glabrous; lower cauline leaves pectinate-pinnatisect, with 16-18 lobes on each side; petal-limb narrowly elliptical 4. palustre